New carbs??..

It’s easy enough to determine if your current carbs are at least theoretically a “match”.

You need a small set of drill bits to use as gauges.
Pull the clusters out of the carbs and check the sizes of all the holes.
If they’re the same between the two carbs, and the venturi and throttle bore sizes are the same...... then in theory they would be the “same”.

On the 750’s I checked out, the way the clusters were set up was very different between the Carter and Ede.

The pic of the SM carb you posted would need to be sideways mounted.

Also, In-line mounted 4160 style Holleys will require one carb be removed to do a jet change.